Means for producing acid liquor



Feb. 21, 1933. J. D. JENSSEN MEANS FOR PRODUCING ACID LIQUOR Filed June 17, 1929 Patentecl Feb. 21, 1933 UNITED STATES PATENT OFFICE JACOB DARRE JENSSEN, OF NEW YORK,

on NEW YORK, 1v. YV.

MEANS FOR PRODUCING ACID LIQUOR j Application filed June 17,

The invention relates'to means for producing sulphite acid liquor, as described in the present specification and illustrated in the accompanying drawing that forms part of the same. 7

The invention consists essentially'of the novel features of construction pointed out broadly and specifically in the claims for novelty following a description containing, an explanation in detail of an acceptable form of the invention. i

The objects of the invention are to introduce artificial pressure in towers during the process of making acid liquor, and thereby increase the eiiiciency in the absorption of the gaseous substance in the liquid substance; to insure continuity in the manufacture ofany mixture in which the regulation of time and pressure is required to duly commingle the constituents; to facilitate the construction of a plant containing this invention without in any way interfering with the conveniences incidental to the washing and cleaning and substitution in the arrangement of the towers, thus effecting the purposes of the invention and yet in no way interfering with the interior constructional features; and generally to provide facilities in the operations in sulphite pulp mills so as to produce the necessary cooking liquor of the desired strength and purity.

In the drawing, Figure 1 is an elevational view partially in section showing diametrically the feed and discharge connections anc the automatic pressure regulators.

Figure-2 is'a fragmentary view showing in cross section the connection of the discharge regulators.

Like numerals of reference indicate corresponding parts in the various figures.

Referring to the drawing, the numerals 15 and 16 indicate a pair of towers, which are here shown as identical in so far as their constructional features are concerned so'that the 1929. Serial No. 371,485.

inner walls and the inert'material 18 in pieces is supported below the spray nozzle '19, and above the gas inlet 20 and liquor outlet 21. The liquid feed pipe 22 is connected orextends from the pump 23to the spray nozzle 19, and this pump 23 is connected by the pipe 24: through the six way COCk'25 to'the liquid tank 26. r 4

V The inverted U-shaped pipe 27 extends from the outlet 21 and forms a riser from said outlet for the discharge of liquor from the tower, and may be made of any desired height according to the pressure required within the tower during the operation in the manufacture of the acid liquor. I

This U-pipe extends from the lower end of the downfiow section into the pipe 28 and this pipe 28 is connected through the six way cook 25 to a settling tank 29 or to another tower as the case may be. u

The inlet-pipes 30 for the gas lead to the inlets 2O fromthe valve casing 31, and this valve casing is connected by the gas feed pipe 32 to the fan 33 which impels the gas into one orother of'the towers 15 or 16 as the case maybe. V v I p The fan 33 draws the gas from the sulphur burner 34 through a cooler 35. The outlet gas pipes 36 extend from the gas outlets37 through the tops of the tanks to the ,valve casing 38 within the chamber 39 above said tanks and an exhaust vpipe 40 extends upwardly through the top of said chamber 39 and haswthe valvel introduced intermediately between thevalve casing and the top of said chamber; The transfer pipe 42 extends downwardly to the valve casing 31 and has thepressure regulatorvalve 43 introduced intermediate of its length.

This completes the description of the de- I tails of construction of a plant suitable for the adaptation of this invention thereto, and in the operation thereof, the gas is produced usually from sulphurburner and by means cock into'one of the pumps and is forced u wardly to a spraynozzle. V

The gas and the, liquid flowing in' contrary directions meet throughout the inert material, and this liquid containing a suitable base absorbs the sulphur and falls to the bottom of the tower in the form of acid liquor. This acid liquor, where two or more towers are used, flows into the automatic pressure regulator in the form of the U-pipe 27 and rises in said pipe to the downflow section and continues therefrom through the six way cock to the other pump,from this pump it is forced up to the spray of the companion tower.

Meanwhile the gas has exhausted itself through the gas outlet of the strong acid liquor tower and flows into the transfer pipe and this flow is controlled by the pressure regulating valve, which raises the gas pressurewithin the tower, thereby strengthening the liquor in the strong acid liquor tower, and passing on the weakened gas to the weak acid liquor tower.

The same process continues from tower to tower and the result is a strong acid liquor in thebottom of the strong acid liquor tower, which flows from the outlet into an automatic liquid pressure regulator in which the riser of the Ushaped pipe creates a back pressure before the liquid flows downwardly to the six way cock and therethrough to the settling tank.

The towers may be piled in the interior with inert material through openings in the tops of the towers preferably by means of a steel chute provided for that purpose, in order to avoid damage to the spray nozzles or partly filled with inert material and partly with limestone or other suitable base.

It is desirable in the use of this plant to flush out the towers at intervals, in fact keep them constantly clean in order that the purity of the acid liquor may be maintained, and thus insure the good quality of the pulp produced from the'use of this mixture for cooking purposes.

What I claim is 1 1. In meansfor producing acid liquor, a plurality of towers, a solution tank, a sulphur burner, a direct connection in pipe and valve form from said sulphur burner to said towers by selection, a common pipe connection branching to the exhaust of said towers and having selecting valve and connecting the exhaust to the aforesaid connection, pumps for elevating the solution, a settling tank for the finished acid liquor from one of the towers, a plurality of inverted U-shaped discharge pipes respectively connected with the towers and with a common discharge pipe and a member common to the many solution a'ndliquor connections to end from the aforesaid parts and having passages chosen therethrough in agreement with the selected tower and with the changes from tower to tower for primary action in the production of the liquor.

2. In means for producing acid liquor, a plurality of towers, a solution tank, a sulphur burner, a direct connection in pipe and valve form from said sulphur burner to said towers by selection, a'common pipe connection branching to the exhaust of said towers and having selecting valve and connecting the exhaust to the aforesaid connection, pumps for elevating the solution, a plurality of inverted U-shaped discharge pipes respectively connected with the towers and with a common discharge pipe and a member common to the many solution and liquor connections to and from the aforesaid parts and having passages chosen therethrough in agreement with the selected tower and with the changes from tower to tower for primary action in the production of the liquor.

3. In means for producing acid liquor, a tower having a liquid inlet at the upper end and a gas inlet and liquor outlet at the lower end, a sulphur, burner having connections therefrom directed to said gas inlet, and a riser tube extending upwardly from said liquoroutlet to a predetermined distance and downwardly to the discharge.

Signed at New York, N. Y., May, 1929.

J. D. JENSSEN. 

